/*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 *
 * This file is part of PortaPack.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#include "jtag.hpp"

#include <cstdint>
#include <cstddef>

namespace jtag {

uint32_t JTAG::shift(const size_t count, uint32_t value) {
    for (size_t i = 0; i < count; i++) {
        const auto tdo = target.clock(
            (i == (count - 1)) ? 1 : 0,
            value & 1);
        value >>= 1;
        value |= tdo << (count - 1);
    }
    return value;
}

uint32_t JTAG::shift_header(const size_t count, uint32_t value) {
    for (size_t i = 0; i < count; i++) {
        const auto tdo = target.clock(
            0,
            value & 1);
        value >>= 1;
        value |= tdo << (count - 1);
    }
    return value;
}

} /* namespace jtag */
